Control valve with a measuring chamber
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Solution Overview
Problem
Existing control valves are bulky and unable to measure pressure (P2) between the amount control arrangement and the differential pressure maintaining arrangement, necessitating additional components that increase size and complexity.
Innovation Solution
A control valve with a second valve body that rotates between positions to establish fluid communication between different channels and a measuring chamber, allowing pressure measurement at various stream-wise locations, utilizing a compact design with rotatable and sealable channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an additional PT-plug with a third channel is provided to measure pressure P2, then pressure measurement capability is improved, but the valve construction becomes bulky
Solution Approach 1:
The single measuring chamber is designed to serve multiple functions by connecting to different pressure locations through the rotatable second valve body. By rotating the second valve body between first and second positions, the same measuring chamber can measure pressure P1 (upstream of first valve body) or pressure P2 (downstream of first valve body, upstream of second valve body), eliminating the need for separate measuring chambers for each location.
Solution Approach 2:
The second valve body is made rotatable between fixed angular positions to dynamically change the fluid communication path. This dynamic configuration allows the system to switch between measuring different pressures without physical reconfiguration or additional permanent channels, maintaining a compact structure while providing versatile measurement capability.
2Adaptability or versatility
If multiple PT-plugs and channels are provided for measuring pressures at different locations, then measurement versatility is improved, but device complexity increases
Solution Approach 1:
The measuring chamber and its associated PT-plug serve as a universal measurement interface that can access multiple pressure points. The rotatable second valve body acts as a switching mechanism that directs different pressure sources to the same measurement interface, reducing the number of permanent channels and PT-plugs needed while maintaining measurement versatility.
Solution Approach 2:
Multiple pressure measurement functions are merged into a single measuring chamber location. Instead of having separate measuring chambers distributed throughout the valve body, the invention combines all measurement functions at one location and uses the rotatable valve body to bring different pressure sources to this consolidated measurement point, thereby reducing structural complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables compact and versatile pressure measurement at multiple locations within the valve, facilitating efficient flow control and optimization, while maintaining a constant differential pressure.
Implementation Method 1
in the first position the second valve body provides fluid communication between the first channel and the first measuring chamber, and in the second position the second valve body provides fluid communication between the second channel and the first measuring chamber
Data Source
AI summary
A control valve includes a valve housing with an inlet, an outlet, and a fluid path extending therebetween. An adjustable first valve body is provided for adjusting a first flow opening of the fluid path. A first channel is debouching into the fluid path at a first location on a stream-wise first side of the first flow opening and a second channel is debouching into the fluid path at a second location on a stream-wise opposite side of the first flow opening. A measuring chamber is also provided. A second valve body is movable between two positions and provides in one position fluid communication between the first channel and the measuring chamber, and provides in a second position fluid communication between the second channel and the measuring chamber.